Hi Adnrew,
If you want to use the same email address to register for the Connect instance I would recommend following these steps:
Go to Monitor and remove all devices from your inventory. If you don't do this, you won't be able to add them to the Connect account when you're ready. This will set the devices back to factory default settings, so start this when you are ready to make the move (this should only take a few minutes) and when you can afford a few minutes of downtime on the wireless.
Click on the silhouette icon in the top right hand corner> Global Settings> Account management> Open your admin record. At the top of this page you'll see the email address you used to register, and you should be able to edit this field. You can change this email address to another working address or a non-sense address. If you go with a non-sense address that doesn't exist, just be aware you won't be able to follow the forgot password workflow if you need to get back in to this version for some reason, just something to keep in mind.
Now that the original email isn't associated with the original VHM, you can register for another HiveManager using the original email address, and this time choose connect. This guides walks you through how to register for Connect specifically: https://thehivecommunity.aerohive.com/s/article/Registering-for-HiveManager-Connect
Once you're in the Connect instance, build your configuration in Configure> network policies, and then add your devices to the device inventory on the Monitor tab, and you should be good to go.
Hope that helps!
